US Bridges

I 90 over Int Toluca County Road

Fair

Big Horn County, Montana · 11.2M W Hardin · Structure no. I00090484+04701

Built
1972
53 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
136 ft
3 main spans
Daily traffic
3,736
2023 count
Owner
State
State Highway Agency

About this bridge

I 90 over Int Toluca County Road is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Int Toluca County Road in Big Horn County, Montana. It was built in 1972, so it is 53 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,736 vehicles a day, roughly 23% of them trucks, projected to reach 3,923 by 2043. The structure is 136 ft (41.5 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI 90
CrossesInt Toluca County Road
Location11.2M W Hardin
RouteInterstate 90
CountyBig Horn County
StateMontana
Coordinates45.74898, -107.8495
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span57 ft (17.4 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,736 (2023)
Projected traffic3,923 by 2043
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 over Int Toluca County Road built?

It was built in 1972, making it 53 years old in 2025.

What condition is I 90 over Int Toluca County Road in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does I 90 over Int Toluca County Road carry?

About 3,736 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I 90 over Int Toluca County Road?

The structure is 136 ft (41.5 m) long with a longest span of 57 ft (17.4 m) and a deck 44 ft wide.

Who owns I 90 over Int Toluca County Road?

It is owned by the State Highway Agency.